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170,377,735. Patente@ Peb, 14, 1888.,-

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UNITED STATES PATENT OFFICE, i

ROBERT MAURICEBIDEDMAN, OF ADRIAN, MICHIGAN, ASSIGNOR TOYTHE jPETROLEUMLIGHT AND HEAT COMPANY, vOF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 377,735, dated February14, 1888.

Application filed April 2l, 1887. Serial No. 235.605. (No model.)

To @ZZ whom it may concern:

Beit known that I, ROBERT MAURICE BI- DELMAN, of Adrian, in the countyof Lenawee and State of Michigan, have invented new and usefulImprovementsin Processes of Carbureting Air; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawing, which forms a part ofthis 4Io specification.

This invention relates to certain new and useful improvements inaprocess for the manufacture of illuminating oil-gas and the apparatusfor carrying out such process. In the I r 5 manufacture of such gas bycarbureting air with the vapors of crude or unrefined hydrocarbon oilsit is necessary that such manufacture should be nearly simultaneousWith-its use, as the tendency of such gas is to condense at certaintemperatures, so that it cannot be stored for future use with economy,for condensation not only takes place in the holder, but also in theservice-pipes.

The object of the present invention is to so 4 l z 5 manufacture suchgas that it will not condense pass to the holder, where it may bestored` until required for consumption.

In order to better understand this process, reference is had to theaccompanying draw'- ing, which forms a part of this specification, andwhich shows a longitudinal sectional View of a preferred form ofapparatus, and wherein A represents a fan or blower for forcing the airthrough` the carburetors B by the pipe C,

leading into the carburetor nearest the blower. The carburetors aresetin series, as shown, and so arranged with dividing-diaphragms D l 5othat the air entering under pressure at the top constituents of crudeoils, and will take them ofthe first compartment `is compelled to passunder the diaphragm and rise in the next compartment, passing out at thetop thereof into the next carburetor at its top, thence downward andunder the diaphragm in this compartment, and risingin the next, to passout at its top, and so on until the gas is conveyed from the lastcompartment to theholder Ejthrough the pipe F; These Acarburetors mayconsist of a long box divided in pairs of 6o compartments by means ofpartition-Walls G, extending from the bottom nearly to the top, withintermediate diaphragm, D, pendent from the top of the airtight boxnearly toits bottom, in order to give vthe zigzag direction to the aircurrents described.

There are several of these chambers employed, each being divided intotwo compartments by means of the hanging diaphragms D. Each of thesechambers is filled with charcoalk 7c and the charcoal saturated With anysuitable hydrocarbon containing some of the lighter volatile oils. Theairbeingforced through, as described, takes up any of the volatilevapors-preferably the more volatile ones-and 7 5 also a certain amountof the tarry mattersv present in the oil. s

From therst carburetor the gas is passed through soapsuds, which act iny two Ways, first mechanically in washing the gas-that-is, Sc freeing itof the heavier vapors, whoseV tendency to be readily condensed isgreatly' increased by the physical properties of the soapsuds, as wellas by the hydrostatic pressure it has to undergo in passing'through-and,sec- 8 5 ondly, in a chemical Way by absorbing the tarry matters.v

The gas escaping from the soapsuds has been deprived of a portion of itsvapors--` namely, the heavier ones-and in its passage through the nextcarburetingchamber it'will again be in a condition to take up somemorevapor, but this time a much smaller amount,

vand consequently a less amount of heavy vapors than in the firstcarburetor. Byarepeated processor' washing,as before, the heavy Y vaporsare again abstracted, and the gas r e-- sulting may be now directedlint-o the holder, or passedthrough more carbureting and washingchambers, if thought necessary.

IOO I I use charcoal in the carburetors, as it presents a large amountof surface, permits the air to pass readily through it with the pressureofa fan-blower, and further prevents the mechanical abstraction of oilby the blast and absorbs a relatively large quantity of oil.

The soapsuds I prefer to other alkaline solutions on account of theirchemical and physical properties.

From the nature of the process it will be understood that the Washingand carbu reting chambers may be multiplied to any extent dcsired.

